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Finding the Fourth Proportional to 625,997.97, 863,018.15 and 419,185.53

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Solution

The fourth proportional to 625,997.97, 863,018.15 and 419,185.53 is: 577,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,997.97 : 863,018.15 = 419,185.53 : x
  2. Step 2: Convert to fraction form
    625,997.97/863,018.15 = 419,185.53/x
  3. Step 3: Cross multiply
    625,997.97x = 863,018.15 × 419,185.53
  4. Step 4: Simplify right side
    625,997.97x = 361,764,718,511.44
  5. Step 5: Solve for x
    x = 361,764,718,511.44/625,997.97
  6. Step 6: Final answer
    x = 577,900.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.